View clinical trials related to Hepatitis B.
Filter by:Conduct a randomized controlled trial (RCT) to test the hypothesis that offering client-centered HIV counseling and testing (HCT) to blood donor candidates will reduce the risk of HIV contamination in the blood supply and also increase appropriate referrals to preventive and care services to persons in need in São Paulo, Brazil.
The aim of our study is to evaluate liver fibrosis using biochemical markers, FibroScan, and radiology methods in patients with chronic hepatitis B in mainland China.
This is an open-label study evaluating multiple doses of GS-7340 versus Tenofovir disoproxil fumarate (TDF).
This prospective, multicenter, observational study will evaluate on-treatment predictors of response in patients with HBeAg positive or HBeAg negative chronic hepatitis B receiving treatment with peginterferon alfa-2a (PEGASYS®) in accordance with local labeling and the summary of product characteristics. Data will be collected from patients for the duration of their treatment and for up to 24 weeks thereafter.
The primary objective of this study is to evaluate the antiviral efficacy of tenofovir disoproxil fumarate (tenofovir DF; TDF) versus placebo in pediatric population (aged 2 to < 12 years at the time of enrollment) with chronic hepatitis B (CHB) infection.
This multicenter, prospective, observational study will evaluate the one-year outcomes in HBeAg positive chronic hepatitis B patients who had received Pegasys (peginterferon alfa-2a) in Arm A of study ML22265. Data will be collected from each patient for up to one year post-therapy.
Primary Aims: 1. Evaluate HBV (Hepatitis B Virus) infection prevalence among Druze in the Galilee. 2. Educate the population in order to reduce transmission 3. Increase awareness among primary care providers Secondary Aims: 1. Identify chronic HBV infected patients who need to be followed and treated, 2. Identify HBV infected women in a childbearing age 3. Identify non immunized individuals and recommend vaccination 4. Identify previously vaccinated individuals who are not immunized 5. Identify previously vaccinated individuals who became infected Study Design: Study population is targeted to native Israeli Druze. We aim for evaluating up to 20,000 people from Druze communities in the Galilee area This work will be divided into three sections: 1. Increasing awareness: lectures and local events will be taken place in the communities. Written information will be given and primary care-providers mainly family doctors, nurses and obstetric surgeons will be involved. 2. All participants, upon signing a consent will: - Fill up a questioner - Checked for weight, height and waist circumflex - Have a blood sample taken 3. Results and recommendations will be forwarded to all participants
This study is being done to compare the safety and efficacy of PEG-Intron™ to that of PEGASYS™ in participants with chronic hepatitis B (hepatitis B envelope antigen [HBeAg] positive or negative) who have not previously been treated with interferon.
This study is an open label, dose escalation study using the classical 3+3 design to determine the MTD of HB-110 and assess the safety, immunogenicity and efficacy of HB-110 DNA therapeutic vaccine administered by Electroporation in combination with Entecavir in chronic hepatitis B patients.
With the availability of potent nucloes(t)ide analogues (NA), such as tenofovir disoproxil fumarate (TDF) and entecavir (ETV), suppression of serum HBV DNA to undetectable levels by polymerase chain reaction (PCR) assays became achievable in most NA treatment-naïve patients. Until recently, however, many patients commenced antiviral treatment with inferior NAs prior to the availability of TDF or ETV, such as lamivudine (LAM) which has a low genetic barrier to resistance. ETV resistance increase up to 51% of patients after 5 years of ETV treatment in lamivudine-refractory patients. Resistance to ETV appears to occur through a two-hit mechanism with initial selection of M204V/I mutation followed by amino acid substitutions at rtT184, rtS202, or rtM250. In vitro studies showed that ETV-resistant mutations are susceptible to TDF, but there are little clinical data on the efficacy of TDF monotherapy in patients with ETV-resistance. On the other hand, there was a retrospective cohort study reporting that, with the combination of TDF and ETV, most of patients became HBV DNA undetectable after median 6 months of treatment. Probability of reaching complete HBV DNA suppression was not decreased in patients with ADV or ETV-resistance. Thus, there is no consistent treatment recommendation for patients with ETV-resistance. In this clinical trial, the investigators will clarify whether tenofovir monotherapy is as effective as tenofovir plus entecavir in inducing complete virologic response in CHB patients with genotypic resistance to ETV and partial virologic response to ongoing treatment.